化工新型材料

化工新型材料 ›› 2021, Vol. 49 ›› Issue (6) : 265-270. DOI: 10.19817/j.cnki.issn 1006-3536.2021.06.058

开发与应用

GO/Fe₃O₄纳米复合物用于亚甲基蓝的高效吸附研究

作者信息 +

Study on the GO/Fe₃O₄ nanocomposite for highly efficient adsorption of methylene blue

Wang Han, Yu Hairong, Liang Ting, Cheng Changjing

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文章历史 +

Received		Published
2021-03-03		2021-06-20
Issue Date	Revised Date
2021-06-29	2021-03-03

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摘要

采用简便一步溶剂热法合成了Fe₃O₄纳米晶修饰磁性石墨烯纳米复合物(GO/Fe₃O₄)。表征了其结构形貌并研究了其对水溶液中阳离子染料亚甲基蓝(MB)的吸附性能。结果表明,以Fe(acac)₃为铁源,不添加任何配体,可合成高比表面积的GO/Fe₃O₄(606.4m²/g);通过π-π堆叠和电荷共同作用,其对水溶液中的MB显示出高效吸附能力,最大平衡吸附容量可达1013.2mg/g。GO/Fe₃O₄对MB的吸附符合准二级动力学模型和Langmuir等温吸附模型。该材料有望成为一种优良的吸附剂用于水体中阳离子污染物的去除。

Abstract

A magnetic graphene oxide nanocomposite decorated with Fe₃O₄ nanocrystals (GO/Fe₃O₄) was synthesized via a simple one-step solvothermal method.The structure and morphology,and adsorption performance of GO/Fe₃O₄ for a cationic dye (methylene blue,MB) from aqueous solution was investigated.The results indicated that,without addition of any ligands,GO/Fe₃O₄ with a high specific surface area of 606.4m²/g could be easily synthesized using Fe(acac)₃ as the iron source.The resulted GO/Fe₃O₄ demonstrated rather high adsorption capacity of 1013.2mg/g via π-π stacking and electrostatic interactions between GO/Fe₃O₄ and MB.The MB adsorption onto MGO fitted well the pseudo-second-order kinetic and Langmuir models,respectively.Such the magnetic graphene nanocomposite could serve as an excellent adsorbent for effective removal of cationic pollutants from water body.

关键词

磁性氧化石墨烯 / 吸附 / 亚甲基蓝 / π-π堆叠

Key words

magnetic graphene oxide / adsorption / methylene blue / π-π stacking

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GO/Fe₃O₄纳米复合物用于亚甲基蓝的高效吸附研究[J]. 化工新型材料, 2021, 49(6): 265-270 DOI:10.19817/j.cnki.issn 1006-3536.2021.06.058

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